Drill puller



G. HINMAN DRILL FULLER Dec. 29, 1925- Filed Nov. 22, 1924v lll GRANT HINMAN, GF CLARKDALE, ARIZONA..

DRILL FULLER.

Application filed November a2, 1924.

T0 all 107mm t may concern:

VBe it known that l, GRANT HINMAN, a citizen of the VUnited States, and a resident of Cla-rkdale, in the county of Yavapai and State of Arizona, have invented certain new and useful Improvements in Drill Pullers, of which the following is a speciication.

My invention relates to and has for its purpose the provision of a device of extr nely simple, inexpensive and durable 'construction which is adapted to be applied to a drill rod employed in the drilling of holes in the earth, preparatory to blasting for pulling the drill when jammed, and in such manner as to utilize the rotational movement of the drill rod, thus eliminating the eiercise of any manual effortin the pulling of the drill.

l will 'describe only one form of drill puller embodying my invention, and will then point out the novel features thereof in claims. y

ln the drawings,

Figure 1 is a view showing in vertical section and partly in elevation one form of drill puller embodying my invention;

Figure 2 is a fragmentary view taken at rightangles to Figure 1;

Figure 3 is a horizontal sectional view takenon the line 3 3 of Figure 2;

Figure l is a fragmentary vertical sec tional view of the puller, showing the gripping elements thereof in gripping position with respect to a drill rod.

Referring specifically to the drawings, in which similar reference characters refer to similar parts in each of the views, my invention in its present embodiment comprises a standard including a relatively wide and circular base 15,' having a peripheral flange 16, the diameter of the base being sufficient to completely surround the well opening when applied to the surface of the ground. Extending upwardly from the base 15 is a tubular body 1.7 formed integral with the base and reinforced by webs 18 arranged at circumferentially spaced intervals and con nected to the base 15. Between the webs, the tubular member 17 is formed with vent openings 19 through which dustmay readily pass exteriorly of the standard.

The tubular body 17 constitutes one of t-he screw elements of the puller, and to this end it is interiorly screw threaded, as indicated at 20. The other screw element of the puller is a tubular member 21 exteriorly Serial No. 751,649.

threaded and telescopicallv received by the tubular body 1T, as clearly illustrated in Figure 1, so that by rotation of the element 21 it can be adjusted vertically within the standard,

rlhe upper end of the screw element 21 is provided with a collar 22 having notches 23 therein arranged in pairs, with each pair receivingl the ends of a substantially Uehaped `.gripping member 24, and in such manner as toallow pivotal swinging movement of the member to occupy a gripping position, as shown in solid lines in Figure 1, or nongripping position as shown in dash lines. ln the present instance thc puller is provided with two whipping members 24, and these members are adapted to co-operate with a clamp 25 in securing a drill rod 26 against rotative movement` with respect to the screw element 21. il shown in Figures 3 and 4, the gripping elements are formed with socketed jaws 2G adapted to conform to the cross sectional contour of the drill rod 26, and these jaws are formed with serrated surfaces 27. as clearly shown in Figure 4l, so as to prevent vertical slippage of the drill rod. rl`he clamp 25 is constructed to embrace the gripping members 24. and is provided with a set screw 28 which maybe adjusted to bring the clamp into clamping relation to the gripping elements an'dto thereby securelyv hold the latter in gripping position with respect to the drill rod.

ln practice, the standard is arranged so that its base is in surrounding relation to the ground opening, when the drill rod 26 can Vhe passed downwardly therethrough into the earth. In the normal operation of the drill rod the gripping elements 211 o'ccupy non-gripping position so that the drill rod can rotate independently of the drill puller. However, should the drill for any reason become jammed in the hole so as to prevent further operation thereof, the pulling of the drill can be readily effected .by moving the gripping elements 24 to gripping position with respect to the drill rod and then securing the elements in gripping position by means of the clamp 25. Upon continued rotation of the drill rod, rotative movement of the screw element 21 is now effected and in such direction that an upward feeding of the same within the standard takes place, thereby exerting an upward pull upon the drill rod to effect a release of the drilln Although l have herein shown and described only one form of drill puller embodying my invention, it is to be understood that various changes and modiiications may be made herein without departing from the spirit of the invention and the spirit and scope of the appended claims.

l claim: j

l. A drill puller comprising a stationary element, a rotatable element, coaeting means connecting the elements to canse vertical movement of the rotatable element when the latter is rotated onk the stationary' element, and means for securing a drill rod to the rotatable element so that when the drill rod. is rotated, rotation of the rotatable element is effected, said means comprising ident-ical gripping members pivoted on the rotatable element, and means removable from said ymembers and adapted to force same into clamping engagement with said drill rod.

2'., A drill puller comprising a stationary element, a. movable element rotatable in the stationary element and having screw threaded engagement therewith toy cause vertical movement ot the movable element when rotated, and means tor securing a drill rod to the movable element so that when the latter' is rotated vertical movement of the drill rod is ettlected, said means comprising identical gripping members pivoted on the rotatable element, and means removable from said ers and adapted to force same into l riping engagement with said drill rod.

3. A drill puller comprising tubular tele.- scopic elements having screw 'threaded engagement with each other, gripping members carried by one of the elements, and a clamp for securing the gripping elements in gripping relation to a drill rod extending through the elements, the clamp being removable from the gripping members and said members being pivoted to the upper end ot said one element so that they can be swung downwardly and outwardly to hang at the sides of said element when the clamp is removedv l. A drill puller comprising a stationary tubular element, a movable tubular element telescopically received by the iirst element and having screw threaded engagement therewith to cause vertical movement of the movable element when rotated in the stationary element, gripping members pivoted on the movable element to occupy gripping er non-gripping positions with respect to adrill rod extending through the movable element, and a clamp engaging the gripping mem1 rrs tor securing the latter in gripping pesi Aen with respect to the drill rod, whereby the movable element and drill rod are rotatable as unit, the gipping members being ot identical lil-shaped construction with their tree ends constituting their'pivoted points and mounted on the upper end et the movable element so as to cause the connecting portions ot said members to straddle the drill rod.

5. fr drill puller comprising telescopic elements having screw threaded engagement with each other, recesses termed in one ot the elements, gripping members pivotally mounted in the recesses, said members being oir' substantially U-orm and raving soclreted jaws with serrated surfaces, and a clamp releasably engaging the members for the purpose described.

G. A drill puller comprising a standard having a relatively broad base and a tubular body extending upwardly from the base, a tubular member telescopically within the tubular body and having screw threaded engagement. therewith, vent openings tormed in the'tubular member, reinforcing webs connecting the tubular body and base, recesses Jormed in the tubular member, gripping members pivotally monnted in the recesses and of substantially tllosn, soclreted jaws on the gripping members, and a clamp engaging the gripping members lier securing the jaws in gripping position with respect to a drill rod extending through the. tubular member.

GRANT HINMAN.

received y 

